This story is a sequel to Lows And Highs
Sunset Shimmer is still recovering from her mental breakdown. While she is of course grateful to Rarity for helping her to reemerge from her shell, no illness can heal overnight. Also, Sunset has her limits. One of those is being awoken before sunrise. Rarity had promised not to, so why is she in Sunset's apartment at the forbidden time? Surely she has a good reason, right?
This story is part of Sunset's Recovery Arc.